I strongly suggest getting in lots of basic practice flights. Test out compenents such as payload cushions and streamers before you test the entire rocket 'system'.
Note the new weight and power limit as well as the new way of scoring the time.
In my personal opinion, this years rules will result in TARC rockets that are more like Aerospace vehicles and less like plumbing or lumber projects. They will need to be light and strong. I would not be surprised if some teams do well with E motors.
-Fred Shecter NAR 20117